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IRIS-G6623

Features

• Oscillator is provided on the monolithic control with adopting On-Chip-

Trimming technology.

• Small temperature characteristics variation by adopting a comparator to

compensate for temperature on the control part.

• Low start-up circuit current (100uA max)

• Built-in Active Low-Pass Filter for stabilizing the operation in case of light

load

• Avalanche energy guaranteed MOSFET with high VDSS

• The built-in power MOSFET simplifies the surge absorption circuit

since the MOSFET guarantees the avalanche energy.

• No VDSS de-rating is required.

• Built-in constant voltage drive circuit

• Built-in soft drive circuit

• Built-in low frequency PRC mode (≒20kHz)

• Various kinds of protection functions

• Pulse-by-pulse Overcurrent Protection (OCP)

• Overvoltage Protection with latch mode (OVP)

• Thermal Shutdown with latch mode (TSD)

INTEGRATED SWITCHER

Package Outline

TO-220 Fullpack (5 Lead)

Descriptions

IRIS-G6623 is a hybrid IC consists from power MOSFET and a controller IC, designed for Quasi-Resonant

(including low frequency PRC) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IC

realizes high efficiency, low noise, downsizing and standardizing of a power supply system reducing external

components count and simplifying the circuit designs.

(Note). PRC is abbreviation of “Pulse Ratio Control” (On-width control with fixed OFF-time).

Typical Connection Diagram

Type

MOSFET

VDSS(V)

RDS(ON)

MAX

AC input(V)

Pout(W)

Note 1

100±15%

75

120±15%

100

IRIS-G6623

450

1.3Ω

Key Specifications

Data Sheet No. PD 96947A

Note 1: The Pout (W) represents the thermal rating at Quasi-Resonant

Operation, and the peak power output is obtained by approximately 120 to

140% of the above listed. When the output voltage is low and ON-duty is

narrow, the Pout (W) shall become lower than that of above.

V

VV

Vi

ii

in

nn

n

I

II

IR

RR

RI

II

IS

SS

S-

--

-G

GG

G6

66

66

66

60

00

00

00

0

D

DD

D

S

SS

S

G

GG

GN

NN

ND

DD

D

O

OO

OC

CC

CP

PP

P/

//

/F

FF

FB

BB

B